CN103423992A - Energy-saving tunnel kiln used for gangue sintered brick production - Google Patents
Energy-saving tunnel kiln used for gangue sintered brick production Download PDFInfo
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- CN103423992A CN103423992A CN2013103825209A CN201310382520A CN103423992A CN 103423992 A CN103423992 A CN 103423992A CN 2013103825209 A CN2013103825209 A CN 2013103825209A CN 201310382520 A CN201310382520 A CN 201310382520A CN 103423992 A CN103423992 A CN 103423992A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention belongs to the technical field of gangue sintered brick production, in particular to an energy-saving tunnel kiln used for gangue sintered brick production. The energy-saving tunnel kiln comprises a drying kiln and a calcining kiln, wherein the calcining kiln comprises a kiln body extending along the horizontal direction, and a light kiln car, the kiln body comprises a kiln top, a kiln wall and a working passage, the working passage comprises a preheating section, a calcining section, a holding section and a cooling section in sequence along the extending direction, the cooling section at a kiln tail is provided with a cooling system, an under-kiln balance cooling system and a bootstrap system, a kiln temperature and kiln pressure monitoring and controlling system is also arranged on the kiln body, and the kiln temperature and kiln pressure monitoring and controlling system is provided with a computer automatic control system in a connected way. The energy-saving tunnel kiln has the beneficial effects that above-thermal calcining and fast calcining are realized, the calcining period is shortened, the calcining energy consumption is reduced, and the heat utilization rate is improved, so that the goal of energy saving is achieved.
Description
Technical field
The invention belongs to the Production technology of gangue sintered brick field, be specifically related to a kind of energy-saving tunnel cave of producing for coal gangue baked brick.
Background technology
Gangue shale clinker bricks mainly utilizes shale and gangue carry out high temperature sintering systems for raw material, have that intensity is high, insulation, the characteristics such as heat insulation, it is the best substitute of conventional clay solid brick, the relevant policies that meet China's building energy conservation and materials for wall reform, except energy-conservation, save soil, emission reduction effect is also very remarkable.Refuse takes full advantage of, environmental pollution reduces, improve the building heat preservation and insulation.At heating districts, the porous brick building can save energy more than 30% in the winter time.Because it has good thermal and insulating performance, make thickness of wall body reduce, can increase building usable floor area 1.13%.
China is since the large section baked brick tunnel kiln of late nineteen eighties Introduced From Abroad (9.2 meters), design aspect at large section kiln has been done a large amount of research, successively found out the design parameter of 4.6 meters, 6.9 meters, 9.2 meters, 10.4 meters serial large cross-section tunnel kilns, and promote at home thousands of production lines, for huge contribution has been made in China's economic construction.Tunnel cave has obtained application the most widely, technical comparative maturity in brickmaking industry.But often be subject to the impact of raw material, moisture content, brick type, weather, equipment, operation and managerial skills in producing coal gangue baked brick is concrete, have when dry that defect is more, to reach productive rate lower; When roasting, in the combustion process of coal gangue baked brick section of burning till in tunnel cave, maximum temperature reaches 1100 ℃ of left and right, temperature at the cooling section brick is down to below 200 ℃ by 900 ℃ of left and right, generally to utilize temperature be that waste heat below 300 ℃ carries out brick bat drying to building materials enterprise, can meet moisture in adobe fully and evaporate required heat, and the heat between 300 ℃ to 900 ℃ is not utilized fully, has caused the significant wastage of the energy.And tunnel cave also exists the section temperature difference to control not, area of dissipation is less, and product quality is poor, and firing cycle is long, the defect that production efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention overcomes above-mentioned the deficiencies in the prior art exactly, and a kind of can realize superthermal roasting, roasting fast are provided, and shorten firing cycle, reduce the roasting energy consumption, improve heat utilization efficiency, meet the energy-saving tunnel cave of producing for coal gangue baked brick of energy-conservation purpose.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of energy-saving tunnel cave of producing for coal gangue baked brick, comprise dry kiln and calcining kiln two parts, described calcining kiln comprises kiln body and the light-duty kiln car extended transversely, the kiln body comprises the kiln top, kiln wall and service aisle, described service aisle comprises successively preheating section on bearing of trend, furnace zone, soaking zone and cooling section, wherein on the cooling section of kiln tail, be provided with cooling system, balance cooling system under kiln, bootstrap system, be equipped with kiln temperature on the kiln body simultaneously, the furnace pressure monitor control system, and described kiln temperature, the furnace pressure monitor control system is connected with computer automatic control system.
Contained the sending on the contained smoke exhaust fan of air-heater, moisture-eliminating blower and calcining kiln of dry kiln all contained the variable frequency adjustment control section, and each variable frequency adjustment control section connects respectively described computer automatic control system.
The long 65-82m of described hothouse section, wide 4.6-7.2m, high 2.4-3.6m.
Described hothouse adopts bottom to disperse air-supply structure and concentrates upper humidity discharging structure.
The wide 6.9m of described calcining kiln section, long 143m.
Girder and secondary beam that described kiln top is followed successively by lightweight refracrory layer, aluminum silicate insulation material layer, elevated-temperature seal coating from bottom to top and supports ceiling material.
Described kiln wall is followed successively by refractory masses, light-weight thermal insulation material layer, insulation material layer and the structural wood bed of material from the inside to surface.
Described light-duty kiln car adopts the lightweight lining material to make; Adopt two cover hermetically-sealed constructions between kiln car, between kiln car both sides and kiln body, also adopt hermetically-sealed construction.
In described calcining kiln, furnace zone length is 15-20m.
The beneficial effect of technical solution of the present invention is:
1, structurally, the present invention comprises dry kiln and calcining kiln for the energy-saving tunnel cave of coal gangue baked brick production, and adobe enters dry kiln by the kiln car movement system, by automatic temperature-adjusting, humidity, wind speed control system, completes the brick bat drying operation; The winch of kiln car by movement system, trailer, ferry bus etc. are transported in tunnel kiln, kiln car pusher heads into tunnel cave by kiln car, finally make the coal gangue sintering brick product at tunnel cave by humidity discharging, preheating, sintering, insulation, the stage such as cooling, finished bricks is in first-class to be tested the unloading of tunnel cave port of export unloading deck, the sale of dispatching from the factory.
2, structurally, the present invention is provided with balance cooling system, bootstrap system under cooling system, kiln on the cooling section of kiln tail; The temperature that wherein said cooling system is used kiln-made product reaches minimum, and the cooling heat discharged is sent to hothouse; Under kiln, the balance cooling system can be regulated the upper and lower pressure balanced of kiln car, and temperature under car is descended, and has both protected bearing and track, has reduced again thermal loss; Be provided with the circulatory system and heat exchange equipment in bootstrap system, use " superthermal roasting " technology, by surpassing the required Hot swapping of roasting in raw material out, realize quick roasting, shorten firing cycle, reduce the roasting energy consumption; Kiln temperature, furnace pressure detect control system and provide technical guarantee for realizing " superthermal roasting " and quick roasting.
3, structurally, the contained air-heater that send of dry kiln of the present invention, the contained smoke exhaust fan of moisture-eliminating blower and calcining kiln all contains the variable frequency adjustment control section, thereby adopt variable frequency adjustment to control air output, exhaust air rate and exhaust smoke level, by the adjustment to air-supply structure, complete the drying medium temperature curve, the adjustment of moisture curve, control the position of hothouse neutral point well, keep relative stability, by the adjustment to smoke discharging structure, can keep the stable of furnace pressure and firing atmosphere, improve the quality of products, be convenient to quality control, decrease power consumption, the average power consumption 40% of saving.
4, structurally, girder and secondary beam that kiln of the present invention top is followed successively by lightweight refracrory layer, aluminum silicate insulation material layer, elevated-temperature seal coating from bottom to top and supports the ceiling material layer, this structure has guaranteed the performance that the kiln top is heat-resisting, be incubated and seal; Described kiln wall is followed successively by refractory masses, light-weight thermal insulation material layer, insulation material layer and the structural wood bed of material from the inside to surface, and this structure has guaranteed the performance that the kiln wall is heat-resisting, be incubated and seal; Described light-duty kiln car adopts the lightweight lining material to make; Adopt two cover hermetically-sealed constructions between kiln car, between kiln car both sides and kiln body, also adopt hermetically-sealed construction, stopped on the kiln car face with car under gas flow.
5, in addition, the energy-saving tunnel cave that the present invention produces for coal gangue baked brick is by structural adjustment, the tunnel cave section temperature difference is controlled in 10 ℃, cooling surface area reduces, waste heat is fully cemented out, heat utilization efficiency reaches 67%, with the conventional tunnel kiln, compares, and makes the thermal process energy-saving efficiency reach 40%; Owing to adopting internal combustion mode sintering, main thermal source is from the internal combustion of adobe, and foundation " roasting fast " system, " superthermal roasting " technology of employing, realize that the goods firing cycle was reduced to 20-24 hour by 36-46 hour, shorten to 24-32 hour arid cycle, significantly improved production efficiency; Adopt this tunnel kiln structure, the product dried qualification rate is 95%-98%, and sintering qualified rate is 98%; By the length of proper extension roasting band and insulation belt, make the compression strength of product and freezing and thawing performance meet the GB requirement.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is the block diagram of the present invention for the energy-saving tunnel cave of coal gangue baked brick production;
Fig. 2 is the structural representation of the present invention for the kiln top of the energy-saving tunnel cave of coal gangue baked brick production;
Fig. 3 is the structural representation of the present invention for the kiln wall of the energy-saving tunnel cave of coal gangue baked brick production;
Sequence number in figure: 1, dry kiln, 2, calcining kiln, 3, preheating section, 4, furnace zone, 5, soaking zone, 6, cooling section, 7, cooling system, 8, balance cooling system under kiln, 9, bootstrap system, 10, kiln temperature, furnace pressure monitor control system, 11, computer automatic control system, 12, the lightweight refracrory layer, 13, aluminum silicate insulation material layer, 14, elevated-temperature seal coating, 15, girder, 16, secondary beam, 17, refractory masses, 18, light-weight thermal insulation material layer, 19, insulation material layer, 20, the structural wood bed of material.
The specific embodiment
Embodiment mono-:
Referring to Fig. 1, in figure, the energy-saving tunnel cave that the present invention produces for coal gangue baked brick, comprise dry kiln 1 and calcining kiln 2 two parts, described calcining kiln comprises kiln body and the light-duty kiln car extended transversely, the kiln body comprises the kiln top, kiln wall and service aisle, described service aisle comprises successively preheating section 3 on bearing of trend, furnace zone 4, soaking zone 5 and cooling section 6, wherein on the cooling section of kiln tail, be provided with cooling system 7, balance cooling system 8 under kiln, bootstrap system 9, be equipped with kiln temperature on the kiln body simultaneously, furnace pressure monitor control system 10, and described kiln temperature, the furnace pressure monitor control system is connected with computer automatic control system 11.
Contained the sending on the contained smoke exhaust fan of air-heater, moisture-eliminating blower and calcining kiln of dry kiln all contained variable frequency adjustment control section (not shown), and each variable frequency adjustment control section connects respectively described computer automatic control system.
The long 65-82m of described hothouse section, wide 4.6-7.2m, high 2.4-3.6m.
Described hothouse adopts bottom to disperse air-supply structure and concentrates upper humidity discharging structure.
The wide 6.9m of described calcining kiln section, long 143m.
Referring to Fig. 2, in figure, girder 15 and secondary beam 16 that described kiln top is followed successively by lightweight refracrory layer 12, aluminum silicate insulation material layer 13, elevated-temperature seal coating 14 from bottom to top and supports the ceiling material layer.
Referring to Fig. 3, in figure, described kiln wall is followed successively by refractory masses 17, light-weight thermal insulation material layer 18, insulation material layer 19 and the structural wood bed of material 20 from the inside to surface.
Described light-duty kiln car (not shown) adopts the lightweight lining material to make; Adopt two cover hermetically-sealed constructions between kiln car, between kiln car both sides and kiln body, also adopt hermetically-sealed construction.
In described calcining kiln, furnace zone length is 15-20m.
The course of work of the present invention is briefly described as follows:
The winch of kiln car by movement system, trailer, ferry bus etc. are transported in tunnel kiln, kiln car pusher heads into tunnel cave by kiln car, finally make the coal gangue sintering brick product at tunnel cave by humidity discharging, preheating, sintering, insulation, the stage such as cooling, finished bricks is in first-class to be tested the unloading of tunnel cave port of export unloading deck, the sale of dispatching from the factory.
The foregoing is only the schematic specific embodiment of the present invention; not in order to limit scope of the present invention; the equivalent variations that any those skilled in the art makes under the prerequisite that does not break away from design of the present invention and principle and modification, all should belong to the scope of protection of the invention.
Claims (9)
1. an energy-saving tunnel cave of producing for coal gangue baked brick, comprise dry kiln and calcining kiln two parts, described calcining kiln comprises kiln body and the light-duty kiln car extended transversely, the kiln body comprises the kiln top, kiln wall and service aisle, it is characterized in that: described service aisle comprises successively preheating section on bearing of trend, furnace zone, soaking zone and cooling section, wherein on the cooling section of kiln tail, be provided with cooling system, balance cooling system under kiln, bootstrap system, be equipped with kiln temperature on the kiln body simultaneously, the furnace pressure monitor control system, and described kiln temperature, the furnace pressure monitor control system is connected with computer automatic control system.
2. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, it is characterized in that: contained the sending on the contained smoke exhaust fan of air-heater, moisture-eliminating blower and calcining kiln of dry kiln all contained the variable frequency adjustment control section, and each variable frequency adjustment control section connects respectively described computer automatic control system.
3. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, is characterized in that: the long 65-82m of described hothouse section, wide 4.6-7.2m, high 2.4-3.6m.
4. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, is characterized in that: disperse air-supply structure bottom described hothouse adopts and concentrate upper humidity discharging structure.
5. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, is characterized in that: the wide 6.9m of described calcining kiln section, long 143m.
6. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, is characterized in that: girder and secondary beam that described kiln top is followed successively by lightweight refracrory layer, aluminum silicate insulation material layer, elevated-temperature seal coating from bottom to top and supports ceiling material.
7. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, it is characterized in that: described kiln wall is followed successively by refractory masses, light-weight thermal insulation material layer, insulation material layer and the structural wood bed of material from the inside to surface.
8. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, it is characterized in that: described light-duty kiln car adopts the lightweight lining material to make; Adopt two cover hermetically-sealed constructions between kiln car, between kiln car both sides and kiln body, also adopt hermetically-sealed construction.
9. the energy-saving tunnel cave of producing for coal gangue baked brick according to claim 1, it is characterized in that: in described calcining kiln, furnace zone length is 15-20m.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315843A (en) * | 2014-10-28 | 2015-01-28 | 黄冈市华窑中瑞窑炉有限公司 | Vertical recycling, drying and calcining furnace for SCR (selective catalytic reduction) denitration catalysts |
| CN104792166A (en) * | 2015-04-29 | 2015-07-22 | 长兴震铭耐火材料有限公司 | Tunnel kiln with sand sealing structure |
| CN104792158A (en) * | 2015-04-29 | 2015-07-22 | 长兴震铭耐火材料有限公司 | Tunnel kiln with automatic temperature control system |
| CN104819642A (en) * | 2015-04-29 | 2015-08-05 | 长兴震铭耐火材料有限公司 | Gangue tunnel kiln |
| CN106082971A (en) * | 2016-07-29 | 2016-11-09 | 四川乔丰新材料科技有限公司 | Gangue shale clinker bricks production system |
| CN108489286A (en) * | 2018-03-20 | 2018-09-04 | 河南建筑材料研究设计院有限责任公司 | A kind of self-sufficient tunnel oven production technology of cogeneration |
| CN110118490A (en) * | 2019-05-16 | 2019-08-13 | 湖南富强特种陶瓷制造有限公司 | A kind of sintering furnace and its application method with residual heat using device |
| CN111121451A (en) * | 2020-02-11 | 2020-05-08 | 郑州博升耐火材料有限公司 | Processing method for firing refractory balls by using tunnel kiln |
| CN111380357A (en) * | 2018-12-29 | 2020-07-07 | 洛阳利尔中晶光伏材料有限公司 | Tunnel kiln |
| CN112441814A (en) * | 2020-11-19 | 2021-03-05 | 凤台县天宝建材有限责任公司 | Gangue shale baked brick manufacturing system |
| CN114212808A (en) * | 2021-12-20 | 2022-03-22 | 江西永兴特钢新能源科技有限公司 | Method for preparing battery-grade lithium carbonate by roasting and extracting lithium in tunnel kiln |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315843A (en) * | 2014-10-28 | 2015-01-28 | 黄冈市华窑中瑞窑炉有限公司 | Vertical recycling, drying and calcining furnace for SCR (selective catalytic reduction) denitration catalysts |
| CN104792166A (en) * | 2015-04-29 | 2015-07-22 | 长兴震铭耐火材料有限公司 | Tunnel kiln with sand sealing structure |
| CN104792158A (en) * | 2015-04-29 | 2015-07-22 | 长兴震铭耐火材料有限公司 | Tunnel kiln with automatic temperature control system |
| CN104819642A (en) * | 2015-04-29 | 2015-08-05 | 长兴震铭耐火材料有限公司 | Gangue tunnel kiln |
| CN106082971A (en) * | 2016-07-29 | 2016-11-09 | 四川乔丰新材料科技有限公司 | Gangue shale clinker bricks production system |
| CN108489286A (en) * | 2018-03-20 | 2018-09-04 | 河南建筑材料研究设计院有限责任公司 | A kind of self-sufficient tunnel oven production technology of cogeneration |
| CN111380357A (en) * | 2018-12-29 | 2020-07-07 | 洛阳利尔中晶光伏材料有限公司 | Tunnel kiln |
| CN110118490A (en) * | 2019-05-16 | 2019-08-13 | 湖南富强特种陶瓷制造有限公司 | A kind of sintering furnace and its application method with residual heat using device |
| CN111121451A (en) * | 2020-02-11 | 2020-05-08 | 郑州博升耐火材料有限公司 | Processing method for firing refractory balls by using tunnel kiln |
| CN111121451B (en) * | 2020-02-11 | 2021-09-28 | 郑州博升耐火材料有限公司 | Processing method for firing refractory balls by using tunnel kiln |
| CN112441814A (en) * | 2020-11-19 | 2021-03-05 | 凤台县天宝建材有限责任公司 | Gangue shale baked brick manufacturing system |
| CN114212808A (en) * | 2021-12-20 | 2022-03-22 | 江西永兴特钢新能源科技有限公司 | Method for preparing battery-grade lithium carbonate by roasting and extracting lithium in tunnel kiln |
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Application publication date: 20131204 |